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Finding the Fourth Proportional to 78,510.31, 108,364.08 and 44,539.06

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Solution

The fourth proportional to 78,510.31, 108,364.08 and 44,539.06 is: 61,475.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,510.31 : 108,364.08 = 44,539.06 : x
  2. Step 2: Convert to fraction form
    78,510.31/108,364.08 = 44,539.06/x
  3. Step 3: Cross multiply
    78,510.31x = 108,364.08 × 44,539.06
  4. Step 4: Simplify right side
    78,510.31x = 4,826,434,260.96
  5. Step 5: Solve for x
    x = 4,826,434,260.96/78,510.31
  6. Step 6: Final answer
    x = 61,475.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.